Abstract: This study measures carbon dioxide (CO2) emissions impact on ASEAN-5 (Indonesia, Malaysia, Philippines, Singapore and Thailand) plus 3 (China, Japan and Republic of Korea) productivity growth and the factors that determined their growth. An extensive growth theory model was generated from the production functions to measure the productivity growth of the countries under study. This model had a gap that cast doubt in the results generated. A statistical analysis was provided to close this gap. Exclusion of externalities such as pollutant emissions created a deficiency in growth accounting models as CO2 emissions is internalised to calculate the green total factor productivity (TFP). The results show a slowdown in the contribution of TFP growth and a negative impact of CO2 emissions produced by these economies on productivity growth in general and TFP growth in particular in comparison with other productivity indictors of these economies.Keywords: ASEAN-5 plus 3, CO2 Emissions, Green TFP, Productivity Growth